(Market Insider) — Silicon Valley’s race to dominate artificial intelligence is pushing spending to record levels — and straining the nerves of even the most loyal shareholders.
Alphabet, Meta, and Microsoft poured nearly $80 billion into AI infrastructure in just the past quarter, a staggering figure that has divided investors over whether these capital outlays will ever translate into real profits.
Alphabet, the parent of Google, saw its shares jump almost 7% in after-hours trading on October 29 after raising its 2025 capital spending forecast by $8 billion to $93 billion and posting record quarterly revenue of $100 billion. Meta, by contrast, fell nearly 9%, potentially erasing $160 billion in market value, after CEO Mark Zuckerberg warned that the company’s AI investments could exceed $100 billion next year.
“The mixed reactions underscore how sensitive investors are to the pace at which AI spending can generate returns,” said Dec Mullarkey, managing director at SLC Management, which oversees $300 billion in assets. He cautioned that this AI gold rush could echo past tech booms where early leaders suffered from overspending before profits materialized.
Even Microsoft — now the world’s third $4 trillion company following its restructured partnership with OpenAI — wasn’t spared. Despite beating earnings expectations and reporting 39% growth in its Azure cloud business, Microsoft’s stock slid 4%. The company disclosed $35 billion in quarterly capital expenditures, up 74% year-on-year and $5 billion above expectations. CEO Satya Nadella told analysts the company is building a “planet-scale” cloud network and plans to double its data centers within two years, with total spending projected to approach $140 billion in 2025.
For now, investors seem more confident in Google and Microsoft’s ability to turn AI infrastructure into profit. Both dominate enterprise cloud computing and are already seeing AI-related demand boost their top lines.
Google CEO Sundar Pichai said the company’s consumer AI platform, Gemini, now has 650 million monthly users, up from 450 million in July and closing in on ChatGPT’s 800 million. He also cited $155 billion in outstanding cloud service contracts and strong growth from AI enterprise products generating “billions in revenue each quarter.” Google’s core ad revenue rose 15%, calming fears that AI tools might erode its traditional search business.
“These results show Google’s AI integration is working,” said Angelo Zino, analyst at CFRA Research. “They’re expanding infrastructure efficiently while maintaining margins — that’s what investors want to see.”
Meta, however, faces a tougher sell. Zuckerberg insists his company must spend aggressively now to build “superintelligent” systems internally, claiming that data centers and chips will later be repurposed for its massive advertising ecosystem. Yet Wall Street is skeptical. Meta’s 26% jump in revenue to $51.2 billion failed to reassure markets as its R&D costs ballooned to 30% of revenue, the highest in over two years, and operating margins slipped to 40%.
“Costs are rising faster than revenue,” said Gene Munster of Deepwater Asset Management. “Next year, revenue may grow 18%, but expenses could climb 35%.”
Adding to investor anxiety, Meta took a $15 billion one-time tax hit tied to former U.S. President Donald Trump’s tax law revisions, slashing net profit by 83% to $2.7 billion. The company also warned that its AI ventures won’t meaningfully generate revenue until 2026 at the earliest.
While Zuckerberg envisions monetizing AI across Facebook, Instagram, and WhatsApp via ads, e-commerce, and paid subscriptions, many remain unconvinced that his AI moonshot aligns with Meta’s core business. “Google and Microsoft are turning AI into product value,” said Brian Wieser of Madison and Wall. “Meta still sells ads.”
The AI arms race is reshaping Big Tech’s balance sheets — and investor psychology. For now, the question is no longer who leads in innovation, but who can afford to keep spending long enough to make it pay off.
